The Construction Of Nanostructure Ordering Assembled System And Study Of Its Property

Nanostructured materials involves physics, chemistry, biology and material science research fields, so the building of nanostructured material and the research of its properties are all very important research aspects. This article involves the work of three parts as followed:1) Cso assembled ordering system and its micromorphologyThe assembling of C&o was successfully made by LB technique basing on literatures and our labs. We also observed the the microstructure by DFM. By using Stearic acid ^ arachic acid and octadecanyl amine as the assistant materials, we successfully controlled the structure of C^ aggregation. The results of DFM study in air indicated that the Ceo in LB films had two structures: the small grains were confined in the "groove" made by the various length of the fatty chain. Moreover, the results of DFM study in liquid showed that the assembly could recombine in liquid.2) Morphology and electric properties of nanofilms of of TiOi and BaTiOsTwo kind structures of TiC>2 nanofilms were obtained: the multihole network and the general granule film; and the structure could be controlled by changing the preparation conditions. The microstructure and conductive property of the two kind ofiii2002.6nanofilms were studied by SPM. For the multihole network film, the current in the hole was small. It is possibly because the grains in the holes was very isolated, so the electrons in the holes had more resistance. The dielectric property of the films were studied also. In order to improve their dielectric capacity, monolayer of Ba(BA)2 was deposited on the TiO2 nanofilm by LB technique. The micromorphology and potential under various conditions were studied.3) The study on preparation, microstructure and the heat stability of nanobeltsThe nanobelts of cadmium hydrate were obtained by LB technique and their microstructure and the thermal stability were studied. The width of the nanobelts prepared was between 15-30nm and the height was about 3-5 nm. The study of AFM showed that the microstructure of nanobelts was not uniformity. The structure of nanobelts prepared were more stable on mica than HOPG . In the two cases, the nanobelts were destroyed calcined exceeding 150 癈.